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authorOlaf Kirch <okir@suse.de>2006-10-04 05:16:03 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 10:55:18 -0400
commit39be4502cb75dc26007fe1659735b26c8e63fcc6 (patch)
tree0f4c6bf14f8a975178b3192bfc9ba942da56619f /include/linux/lockd
parent031d869d0e0be18cfe35526be5608225b8f0a7be (diff)
[PATCH] knfsd: match GRANTED_RES replies using cookies
When we send a GRANTED_MSG call, we current copy the NLM cookie provided in the original LOCK call - because in 1996, some broken clients seemed to rely on this bug. However, this means the cookies are not unique, so that when the client's GRANTED_RES message comes back, we cannot simply match it based on the cookie, but have to use the client's IP address in addition. Which breaks when you have a multi-homed NFS client. The X/Open spec explicitly mentions that clients should not expect the same cookie; so one may hope that any clients that were broken in 1996 have either been fixed or rendered obsolete. Signed-off-by: Olaf Kirch <okir@suse.de> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/lockd')
-rw-r--r--include/linux/lockd/lockd.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index a345650e5622..5920ecaeed66 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -193,7 +193,7 @@ u32 nlmsvc_cancel_blocked(struct nlm_file *, struct nlm_lock *);
193unsigned long nlmsvc_retry_blocked(void); 193unsigned long nlmsvc_retry_blocked(void);
194void nlmsvc_traverse_blocks(struct nlm_host *, struct nlm_file *, 194void nlmsvc_traverse_blocks(struct nlm_host *, struct nlm_file *,
195 nlm_host_match_fn_t match); 195 nlm_host_match_fn_t match);
196void nlmsvc_grant_reply(struct svc_rqst *, struct nlm_cookie *, u32); 196void nlmsvc_grant_reply(struct nlm_cookie *, u32);
197 197
198/* 198/*
199 * File handling for the server personality 199 * File handling for the server personality